Java Language Interview Question and Answers : 2

6.	What is variables and then types?
	Variables is an identifier that denotes a storage location used to store a data values.unlike constants that remain unchanged during the execution of a program, a variable may takes different values at different times during the execution of the program. Instance variables Class variables Local variable Parameters

7.	what is dot operator?
	The dot operator(.) is used to access the instance variables and methods of class objects.It is also used to access classes and sub-packages from a package. Examples :  Person1.age ---------> Reference to the variable age

8.	Define strings?
	Strings represent a sequence of characters.The easiest way to represent a sequence of characters in java is by using a character array.

9.	What is serialization?
	Serialization is the process of converting a objects into a stream of bytes.

10.	What are different types of access modifiers?
	Access specifiers are keywords that determine the type of access to the member a class. Public Protected Private Default <<<PREV                                                                                             NEXT>>>